CVE-2026-27679 Missing Authorization check in SAP S/4HANA Frontend OData Service (Manage Reference Structures)
Attackers can update and delete reference structure entities without authorization, compromising data integrity in SAP S/4HANA.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-27679?
CVE-2026-27679 is a medium-severity missing authorization vulnerability in SAP_SE SAP S/4HANA Frontend OData Service (Manage Reference Structures), published on 14 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Due to missing authorization checks in the SAP S/4HANA frontend OData Service (Manage Reference Structures), an attacker could update and delete child entities via exposed OData services without proper authorization. This vulnerability has a high impact on integrity, while confidentiality and availability are not impacted.
Weakness: CWE-862
Which versions are affected by CVE-2026-27679?
It affects 1 product.
Products include Sap Manage Reference Structures.
How do I fix CVE-2026-27679?
No fix has been published for CVE-2026-27679 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-27679 being exploited?
There is no known exploitation of CVE-2026-27679 in the wild and no public exploit code.
Sources
Also known as GHSA-fcjm-cm6x-4v66.